Semester Exam Dec 2024

Which of the following elements is a noble gas?

• Nitrogen

• Argon

• Oxygen

• Chlorine

Which of the following is a characteristic of metals?

• Poor conductors of heat and electricity

• Brittle and break easily

• Malleable and ductile

• Low melting and boiling points

Which of the following forces is acting on an object at rest on a flat surface?

• Only gravitational force

• Only normal force

• Gravitational force and normal force

• Gravitational force and frictional force

When an object is at rest, the forces acting on it are balanced. Which of the following statements is true?

• The net force is greater than zero

• The net force is zero

• The object is moving with a constant velocity

• The object is accelerating

Tags

NGSS.MS-PS2-2

At the highest point of a roller coaster, where the speed is lowest, the energy is mostly:

• Kinetic energy

• Potential energy

• Both kinetic and potential energy are equal

• Thermal energy

Tags

NGSS.MS-PS3-1

NGSS.MS-PS3-5

NGSS.MS-PS3-4

As a roller coaster descends from a high point, what happens to its potential energy and kinetic energy?

• Potential energy increases, and kinetic energy decreases

• Potential energy decreases, and kinetic energy increases

• Both potential and kinetic energy decrease equally

• Both potential and kinetic energy increase equally

Tags

NGSS.MS-PS3-5

According to Newton's Second Law of Motion, what happens to the acceleration when a force is applied to an object with more mass?

• The object will accelerate more.

• The object's acceleration will remain the same.

• The object will accelerate less.

• The object's speed will decrease.

Tags

NGSS.MS-PS2-2

According to Newton's Third Law of Motion, when you push on a wall, the wall pushes back on you with:

• A greater force

• A smaller force

• The same force in the opposite direction

• No force at all

Tags

NGSS.MS-PS2-1

Which of the following equations correctly relates speed, distance, and time?

• Speed = Distance × Time

• Speed = Distance / Time

• Distance = Speed / Time

• Distance = Speed + Time

If a car travels 150 kilometers in 3 hours, what is its average speed?

• 45 km/h

• 50 km/h

• 55 km/h

• 60 km/h

Tags

NGSS.MS-PS3-1